C&P Telephone

The Chesapeake and Potomac Telephone Company, usually known as C&P Telephone, is a company providing services to Washington, D.C., Maryland, West Virginia, and Virginia.

Today, three of the companies are owned by Verizon Communications: The Chesapeake and Potomac Telephone Company (DC), The Chesapeake and Potomac Telephone Company of Maryland, and The Chesapeake and Potomac Telephone Company of Virginia. 

 References 

Category:American telephone companies